Improved railboad-oar wheel



S E L I T S E RAILROAD GAR -WHEBL.

,N 76,844. Patented Apr. 14, 1868.

EZRA ST-ILES, 0F NEWYORK', .N. Y,

Letters PateutlVo. l6,844, dated April 14,1868.

mrnovsn Remote-on WHEEL.

fit: stimuli rzfzmt is in trust jitters stem nit mating part at it: acneTO WHOM IT MAY CONCERN: 4

Be it known that I, EzBA S:rILEs,-havc invented an Improvement in theManufi acture ot Steel Oar-Wheels for Rsih'osd-Gars, said wheels beingadapted more especially to horse-cars; and I do hereby declare that 'thefol-r lowing is nfull, clear, and exact description of the same,reference being made to the annexed drawing, making a part of thisspecification, in which- Figure I is a sectional view of the dies in theact of compressing the steel plate.

Figure H is a sectional View of thewheel finished. 1

Figure III is a side view of the finished wheel; and

Similar letters indicate similar parts throughout the figures.

My invention consists in forming the whole wheel st one operation, withthe exception of the hubor nave, which latter, in consequence of thelightness of the material, must be subsequently attached. 7

The tread and body of the wheel areformed atone operation, by beingcompressedbstween a pair of die of suitable shape and construction togive the required size and form.

The dic's consist of two parts, ituupper and lower (lie, the lower partto he of cast iron,-suflicientlymnssive and heavy to resist thecompressicntc which it will be subjected by the blow ofvthe upper part.The concavity of this lower half is of the shape of the intended wheel,that is to say, the trend and centre or body. In case the body is to becorrugated, then the die will have the necessary depressions 'andelevations to proilucc thntf result. V The upper die is to be thecounterpart in=rcvorse,'and so formed ,as to drop within the lower die,lease; however, suificient space for the steel plate. p A plate ofsteel, of the size and thickness from which to produce the intendedwheel, is' then heated to a bright red, and, being laid upon the lowerdie, the upper ,is brought down upon it in the usual manner ofoperrating a drop-press. At a is the lower die, and st 6 the upper one,shown in the act of forming the steel plate at c, the mechanism of allthese parts being common to such machines.

In-order that the flange may be truly circular, the upper half of thedie overlaps the circumference of the lower half, and thus forms asheer, as-see'n at e, to trim 0d the surplus metal, and give a true andnest finish to the wheel.

The plate c is now to be removed, and the central holo formed, (if ithas not already been 'done by means of a punch in the drop 6.) A:hub,"vof snitsble shape, is now to be bolted on the wheel, as shown at d. Thewheel is now complete and-ready for attachment to the axle in theusu'almanner.-

I claim as new, and of my inventiont The withinedescribed car-wheel,formed of a-plate of metal of uniform thickness, by bending and swagmgthe some in dies, as herein set forth, and having a hubattuched'ther'eto, substantially as and for the purposes herein setforth, I

In witness whereof, I hove hereunto suhscribedemy name.

EZRA smite.-

Witnesses:

8. H. Manna, A. 1. Damon.

